From 1 June 2018 Xero is deprecating the use of TLS 1.0. Older versions of Scan2Invoice need to be upgraded the use a newer security protocol.
Older versions of Scan2Invoice might get the following error message when trying to connect to Xero:
Connection failed. Check your internet connection: Object reference not set to an instance of an object.
This problem is resolved in the latest version of Scan2Invoice. To upgrade you need to download and install the latest version from the link below:
This problem only affects Xero and not QuickBooks Online customers.